On 18/3/25 18:28, Tim via users wrote:
On Tue, 2025-03-18 at 08:43 +1100, Stephen Morris wrote:
Thanks Todd, it's been quite a while since I've used DMESG, but I don't remember ever having to use sudo with it, nor do I remember ever seeing the message about kernel buffer access being denied, but it just means I will now have to always remember to use sudo with it. Although logically it doesn't make sense to me, it is only a read so what damage can a read do, but then there are also folders under /etc that you can't issue an LS against without sudo, so I guess it's just the same thing.
It didn't need sudo in the past, but now it does. So you are remembering correctly.
Supposedly, it could show an ordinary user something they shouldn't know, hence the increased security, now.
It depends on what environment you are in, if you are in an organisational environment then it is possible that it may show something that is sensitive (although I work in an environment where there are areas of the organisation that work with data they consider to be sensitive enough that even organisation admins shouldn't have visibility of it, only they should), but in a home environment that level of sensitivity doesn't really apply.
regards, Steve